4560 locations in the last 30 days (4724 reports) · Last sighting 13 hours ago
What am I looking at?
Each circle is a Chicago neighborhood. The number is its report count — click one to zoom in and see individual sightings there.
Colors are relative to what’s currently on screen, so they adjust as you switch time ranges.
Zoomed into a neighborhood or zip? Same colors group nearby reports, and a bright dot means that exact spot’s been reported more than once.
Chicago has topped national rankings of the rattiest U.S. cities for over a decade running — a reputation the city itself takes seriously enough to run one of the country’s most active 311 rodent-complaint programs. Every baiting request, burrow report, and complaint filed with the city becomes a public record. RatCity turns that record, plus reports from people who live here, into a map you can actually use: is this block bad? Is it getting worse? Which neighborhood is winning (or losing) the fight this month?
Most of the data is Chicago’s own — every “Rodent Baiting/Rat Complaint” filed through 311, pulled in automatically once a day so the map never goes stale. Layered on top are sightings reported directly by visitors, matched to the same neighborhood and zip-code boundaries the city uses, so a resident’s report and an official 311 complaint carry equal weight on the map.
Circles are sized and colored by how many reports a neighborhood has racked up — blue is quiet, red means trouble. The Day / Week / 30 Days / Year toggle up top changes the window, so you can see whether a neighborhood’s rat problem is a one-week blip or a year-long trend. Whoever’s in the lead gets crowned the neighborhood Rat King in the sidebar, a title that changes hands as new reports come in.
Noticed a rat that isn’t on the map yet? Use “Report a sighting” above — it takes under a minute and goes live as soon as it’s reviewed. Curious about where the data actually comes from or how reports are moderated? See the About page for the full breakdown.
Want more? The blog has weekly trend recaps and guides on Chicago’s rat problem and how to keep it out of your home.
53,164 reports match your filters.
| Date | Address | Neighborhood | Ward | Status | Response time | Reported via | Source |
|---|---|---|---|---|---|---|---|
| 8/4/2025 | 6230 N KEYSTONE AVE | Forest Glen | 39 | Completed | 11 days | Alderman's Office | City 311 |
| 8/4/2025 | 5955 S THROOP ST | West Englewood | 16 | Completed | 8 days | Phone Call | City 311 |
| 8/4/2025 | 2653 S KARLOV AVE | South Lawndale | 22 | Completed | 8 days | Alderman's Office | City 311 |
| 8/4/2025 | 1436 W MONTROSE AVE | Uptown | 47 | Completed | 11 days | Internet | City 311 |
| 8/4/2025 | 4345 S MARSHFIELD AVE | New City | 15 | Completed | 8 days | Alderman's Office | City 311 |
| 8/4/2025 | 5430 W GALE ST | Jefferson Park | 45 | Completed | 10 days | Phone Call | City 311 |
| 8/4/2025 | 11413 S WASHTENAW AVE | Morgan Park | 19 | Completed | 10 days | Alderman's Office | City 311 |
| 8/4/2025 | 5431 W WARWICK AVE | Portage Park | 30 | Completed | 15 days | Phone Call | City 311 |
| 8/4/2025 | 3341 N PIONEER AVE | Dunning | 38 | Completed | 16 days | Alderman's Office | City 311 |
| 8/4/2025 | 2909 N AUSTIN AVE | Belmont Cragin | 30 | Completed | 14 days | Phone Call | City 311 |
| 8/4/2025 | 1110 W DICKENS AVE | Lincoln Park | 43 | Completed | 10 days | Internet | City 311 |
| 8/4/2025 | 4317 S PRAIRIE AVE | Grand Boulevard | 3 | Completed | 4 days | Phone Call | City 311 |
| 8/4/2025 | 5130 N ALBANY AVE | North Park | 33 | Completed | 10 days | Internet | City 311 |
| 8/4/2025 | 2313 N HAMILTON AVE | Logan Square | 32 | Completed | 10 days | Internet | City 311 |
| 8/4/2025 | 1700 W 19TH ST | Lower West Side | 25 | Completed | 10 days | Internet | City 311 |
| 8/4/2025 | 10712 S ST LOUIS AVE | Mount Greenwood | 19 | Completed | 10 days | Alderman's Office | City 311 |
| 8/4/2025 | 10963 S VINCENNES AVE | Morgan Park | 21 | Completed | 10 days | Phone Call | City 311 |
| 8/4/2025 | 4956 N MEADE AVE | Jefferson Park | 45 | Completed | 10 days | Phone Call | City 311 |
| 8/4/2025 | 4319 S ELLIS AVE | Kenwood | 4 | Completed | 1 day | Internet | City 311 |
| 8/4/2025 | 9544 S WENTWORTH AVE | Roseland | 9 | Completed | 11 days | Phone Call | City 311 |
| 8/4/2025 | 808 N LAKE SHORE DR | Near North Side | 2 | Completed | 9 days | Mobile Device | City 311 |
| 8/4/2025 | 1337 W HENDERSON ST | Lake View | 44 | Completed | 14 days | Phone Call | City 311 |
| 8/4/2025 | 753 E 75TH ST | Greater Grand Crossing | 6 | Completed | 7 days | Phone Call | City 311 |
| 8/4/2025 | 5541 W GRACE ST | Portage Park | 30 | Completed | 14 days | Alderman's Office | City 311 |
| 8/4/2025 | 3120S S HALSTED ST | Bridgeport | 11 | Completed | 4 days | Phone Call | City 311 |